NZ507297A - Non-destructive testing of wooden members for their strength characteristics using sound or shock waves - Google Patents
Non-destructive testing of wooden members for their strength characteristics using sound or shock wavesInfo
- Publication number
- NZ507297A NZ507297A NZ50729700A NZ50729700A NZ507297A NZ 507297 A NZ507297 A NZ 507297A NZ 50729700 A NZ50729700 A NZ 50729700A NZ 50729700 A NZ50729700 A NZ 50729700A NZ 507297 A NZ507297 A NZ 507297A
- Authority
- NZ
- New Zealand
- Prior art keywords
- tree
- sound
- spike
- strength characteristics
- shock waves
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/223—Supports, positioning or alignment in fixed situation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/46—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0238—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0098—Plants or trees
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Wood Science & Technology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A non-destructive method of selecting trees (without needing to fell the tree) for their strength characteristics by measuring along the grain of the tree the modulus of elasticity; overcoming the impreciseness of visual inspection and also avoiding under-grading or over-grading timber. Said method comprising: (i) inserting a spike through any surface material and into the side of a fibrous material of the tree, (ii) creating a sound or shock wave at right angles to the side of the tree, with an input means, at an input point which is apart from the spike, said wave penetrating any surface material and the tree itself and traveling along the tree, (iii) determining the time taken for the sound or shock wave to travel along the tree from its input point to the spike, (iv) comparing said time taken to collected reference information and thus obtaining an estimation of the strength quality of the tree.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ50729700A NZ507297A (en) | 2000-10-03 | 2000-10-03 | Non-destructive testing of wooden members for their strength characteristics using sound or shock waves |
AU2002212842A AU2002212842A1 (en) | 2000-10-03 | 2001-10-01 | Non-destructive testing of fibrous members |
PCT/NZ2001/000205 WO2002029398A1 (en) | 2000-10-03 | 2001-10-01 | Non-destructive testing of fibrous members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ50729700A NZ507297A (en) | 2000-10-03 | 2000-10-03 | Non-destructive testing of wooden members for their strength characteristics using sound or shock waves |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ507297A true NZ507297A (en) | 2003-01-31 |
Family
ID=19928149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ50729700A NZ507297A (en) | 2000-10-03 | 2000-10-03 | Non-destructive testing of wooden members for their strength characteristics using sound or shock waves |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002212842A1 (en) |
NZ (1) | NZ507297A (en) |
WO (1) | WO2002029398A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU779834B2 (en) | 1999-07-30 | 2005-02-10 | Fibre-Gen Instruments Limited | Log testing apparatus |
EP2549272A1 (en) | 2004-01-22 | 2013-01-23 | Regents Of The University Of Minnesota | Method and apparatus for evaluation of standing timber |
NZ545247A (en) | 2005-02-11 | 2007-05-31 | Waratah Nz Ltd | Method and apparatus for assessing or predicting the characteristics of wood |
CN104076088A (en) * | 2013-09-23 | 2014-10-01 | 浙江工商大学 | Pine texture detection method |
SE540910C2 (en) * | 2017-05-02 | 2018-12-18 | Gorzsas Andras | Spectroscopic method and device for determining the characteristics of a tree |
US20220034847A1 (en) * | 2018-09-26 | 2022-02-03 | Structural Lines Party Limited | Utility pole monitoring system and device |
US11467132B2 (en) * | 2018-09-27 | 2022-10-11 | Volt Holdings Limited | Insertable waveguide to improve acoustic signal transmission in wooden specimen |
US11614427B2 (en) | 2018-09-27 | 2023-03-28 | Volt Holdings Limited | Waveguide usable for non-destructive evaluation of specimen including wooden specimen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8622731D0 (en) * | 1986-09-20 | 1986-10-29 | Bio Kil Chemicals Ltd | Testing timbers |
ES2069752T3 (en) * | 1989-12-01 | 1995-05-16 | Sandes Sa | APPARATUS FOR THE AUTOMATIC AND NON-DESTRUCTIVE DETERMINATION OF THE CLASS OF STANDARDIZED MECHANICAL PROPERTIES OF A SAMPLE OF HYGROSCOPIC MATERIAL. |
US5307679A (en) * | 1992-03-25 | 1994-05-03 | The United States Of America As Represented By The Secretary Of Agriculture | Method and apparatus for evaluating the drying properties of un-dried wood |
US6026689A (en) * | 1998-02-25 | 2000-02-22 | Weyerhaeuser Company | Log cutting optimization system |
WO1999044050A1 (en) * | 1998-02-27 | 1999-09-02 | Massachusetts Institute Of Technology | Acoustic tree and wooden member imaging apparatus |
WO2000011467A1 (en) * | 1998-08-24 | 2000-03-02 | Carter Holt Harvey Limited | Method of selecting and/or processing wood according to fibre characteristics |
-
2000
- 2000-10-03 NZ NZ50729700A patent/NZ507297A/en unknown
-
2001
- 2001-10-01 AU AU2002212842A patent/AU2002212842A1/en not_active Abandoned
- 2001-10-01 WO PCT/NZ2001/000205 patent/WO2002029398A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2002029398A1 (en) | 2002-04-11 |
AU2002212842A1 (en) | 2002-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PSEA | Patent sealed | ||
LCEA | Licensees added |
Name of requester: CARTER HOLT HARVEY LIMITED |
|
RENW | Renewal (renewal fees accepted) |